2011/3/20 Philipp A. <flying-sheep@web.de>
On modern Linux distributions, there is support for the ellipsis (…) on the keyboard layout; The combination is [AltGr+.]

Not all. In openSUSE that is not the case. I made it for myself. I have a file
    /SharedFunctions/Xmodmap.extra
which I use with:
    xmodmap /SharedFunctions/Xmodmap.extra

In this I have now:
    keysym period    = period       greater     ellipsis

That does the trick.

If you are interested in the complete file: I have it attached.

--
Cecil Westerhof